This is one of my custom jazz styles (One of a dozen or so)..They are perfect for that sitting in feel...What makes them work so well...although you may play simple chords, the jazz guitar is playing complex chords...

This style is a basic simple arrangement that allows room to do your own thing (EP in my case here)...

With the dozen custom styles, I could jam all night

I haven't seen style programming on any current brand that does what my custom styles do...